Rotate the backup on base of compressed files.

odroid.yaml

@@ -64,7 +64,7 @@
     - name: Store the yearly backups
       copy:
         remote_src: true
-        src: "{{ backup_dir }}/{{ item }}/{{ ansible_date_time.iso8601_basic_short }}.sql"
+        src: "{{ backup_dir }}/{{ item }}/{{ ansible_date_time.iso8601_basic_short }}.sql.gz"
         dest: "{{ backup_dir }}/{{ item }}/daily/"
       loop: "{{ databases }}"